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Spacer & Sealant

photo inside warehouse of spacer products

Spacer

Super Spacer® Standard (EPDM Foam Spacer) –  Available in gray and black. 

All Super Spacer products meet the challenge of the P-1 chamber; the test many engineers consider the world’s toughest.

One week spent in a P-1 chamber is equivalent to one year in the field, and Super Spacer survives with long term P1 performance with a low seal failure history within the industry.  

Super Spacer expands and contracts and always returns to its original shape protecting against stress cracks that can lead to seal failure. Super Spacer’s 100% memory formula stands up to a wide range of temperatures and is designed to provide outstanding UV resistance. 

Graphic showing types of window spacers that protect against condensation
photo of blue metal barrel of Fuller sealant

Sealant

HB Fuller® HL-5180 Reactive Hot-Melt 

Our insulated glass units use HB Fuller® HL-5180, a reactive hot-melt sealant that combines the moisture vapor barrier performance (MVTR) of traditional hot-melts with the structural strength of polyurethane, something standard hot-melts cannot achieve. 

This advanced sealant chemically reacts with moisture in the air, creating a strong bond to the glass and enhancing the long-term durability and structural integrity of the unit. 

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